Home / 128,065,556.70-176,730,429.69-69,328,178.82

Finding the Fourth Proportional to 128,065,556.70, 176,730,429.69 and 69,328,178.82

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Solution

The fourth proportional to 128,065,556.70, 176,730,429.69 and 69,328,178.82 is: 95,672,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,065,556.70 : 176,730,429.69 = 69,328,178.82 : x
  2. Step 2: Convert to fraction form
    128,065,556.70/176,730,429.69 = 69,328,178.82/x
  3. Step 3: Cross multiply
    128,065,556.70x = 176,730,429.69 × 69,328,178.82
  4. Step 4: Simplify right side
    128,065,556.70x = 12,252,398,832,483,756
  5. Step 5: Solve for x
    x = 12,252,398,832,483,756/128,065,556.70
  6. Step 6: Final answer
    x = 95,672,865.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.